OSX Installation
  1. Download and unzip the ZIP file for either Eclipse 3.3 or 3.4 into your Eclipse root directory while making sure to preserve the folder structure within the ZIP file. This will add the product features and plug-ins to your Eclipse features and plug-in directories.

To display truly native looking forms, GWT Designer for MacOSX uses the Safari browser whose core is a WebKit framework installed in the OS. This WebKit framework is more than 2.5 years old and contains many bugs which may limit the functionality of GWT Designer. In order for GWT Designer to work properly, you need to install the Safari 3 browser (recommended) or install the latest WebKit.
  1. Start Eclipse. An Information dialog will appear. Read the directions and click Yes to see detailed directions on how to install the Safari 3 browser or the latest WebKit.

Note: If you don't install the latest Safari 3 browser or WebKit, several GWT Designer features will not work.
  1. If GWT Designer fails to work properly (for example, you see an Unknown Window Type error), shut down Eclipse and delete everything in the "configuration" directory except the config.ini file and the org.eclipse.update/platform.xml file. You should also keep your org.eclipse.update/bookmarks.xml file in order to preserve your update site bookmarks. If that does not help, review all of the suggestions in this FAQ entry.
  1. If you installed a version of GWT Designer for OSX prior to v2.0.0, delete the following plugin, if it exists in your environment...

    plugins\org.eclipse.swt.carbon.macosx.gwt